A lovely small marquise-shaped green-blue boulder opal.

• 3.21 carats.
• 11.4 x 10.9 mm / 0.44" x 0.42".
• 3 mm / 0.11" thick.
• Natural solid boulder opal.
• Mined by Sue at her Yaraka opal mine in Queensland, Australia.
• Commercial grade, with a minor imperfection.